Rotor Position and Speed Estimation Method for Magnetically Suspended PMSM Based on Modified Sliding Mode Observer
Haicai Liu, Guangjun Li
Available Online July 2016.
- https://doi.org/10.2991/mcae-16.2016.50How to use a DOI?
- magnetic flywheel energy storage system; permanent magnetic synchronous motor; sliding mode observer; lyapunov; adaptive low-pass filter
- This paper proposes a method of rotor position and speed estimation for magnetically suspended permanent magnetic synchronous motor (PMSM) based on modified sliding mode observer(SMO). In order to weaken the chatting phenomenon, the estimated back-EMF is brought in the current model and a hyperbolic tangent function is used. In order eliminate the high-order harmonic components in the estimated back-EMF, an adaptive low-pass filter whose cutoff frequency varies with the motor electrical frequency is adopted. The stability of the algorithm is proved by the Lyapunov stability theory. Finally, the validity of the method is verified by simulation and experiment.
- Open Access
- This is an open access article distributed under the CC BY-NC license.
Cite this article
TY - CONF AU - Haicai Liu AU - Guangjun Li PY - 2016/07 DA - 2016/07 TI - Rotor Position and Speed Estimation Method for Magnetically Suspended PMSM Based on Modified Sliding Mode Observer BT - Proceedings of the 2016 International Conference on Mechatronics, Control and Automation Engineering PB - Atlantis Press SP - 210 EP - 214 SN - 2352-5401 UR - https://doi.org/10.2991/mcae-16.2016.50 DO - https://doi.org/10.2991/mcae-16.2016.50 ID - Liu2016/07 ER -